Method of operating a roll stand arrangement

Abstract

A method of operating a roll stand arrangement including one or more edging/roughing stands followed by a compact rolling group arranged transversely offset relative to the edging/roughing stands and connected to the edging/roughing stands through connecting roller conveyors and a transverse conveying unit. The compact rolling group is composed of first and second universal stands or two-high stands and an intermediate edging stand arranged between the first and second stands. In accordance with a predetermined cycle, preliminary sections arriving from a continuous casting plant are supplied directly without intermediate storage to the roll stand arrangement and are finish rolled successively in the compact rolling group into profiled rolled strands and are supplied, before or while the next following preliminary section enters the compact rolling group, to a cooling bed arranged laterally of the rolling line. When rolling sections whose finish rolling time is longer than the cycle predetermined by the continuous casting plant, a first length portion of the rolled strand which has already emerged from the compact rolling group is severed from the rolled strand and is supplied to the cooling bed.

We claim: 
     
       1. A method of rolling sections in a roll stand arrangement composed of first and second universal stands or two-high stands and an intermediate edging stand arranged between the first and second stands, wherein a run-out roller conveyor is arranged following the roll stand arrangement and a cooling bed is arranged laterally of the run-out table, the method comprising supplying preliminary sections from a continuous casting plant in accordance with a cycle predetermined by an output of the continuous casting plant to the roll stand arrangement, finish rolling the sections in the roll stand arrangements in a number of passes and reversing passes, supplying each rolled section to the run-out roller conveyor, severing the rolled section in a middle thereof into a front length portion and a rear length portion in a conveying direction, further comprising moving the front length portion onto the cooling bed, moving the rear length portion on the run-out roller conveyor next to the cooling bed and subsequently moving the rear length portion onto the cooling bed, wherein during moving the rear length portion a next preliminary section supplied by the continuous casting plant is introduced into and rolled in the roll stand arrangement. 
     
     
       2. A method of rolling sections in a roll stand arrangement composed of first and second universal stands or two-high stands and an intermediate edging stand arranged between the first and second stands, wherein a run-out roller conveyor is arranged following the roll stand arrangement and a cooling bed is arranged laterally of the run-out table, the method comprising supplying preliminary sections from a continuous casting plant in accordance with a cycle predetermined by an output of the continuous casting plant to the roll stand arrangement, finish rolling the sections in the roll stand arrangements in a number of passes and reversing passes, supplying each rolled section to the run-out roller conveyor, severing the rolled section in a middle thereof into a front length portion and a rear length portion in a conveying direction, further comprising moving the rear length portion onto the cooling bed, moving the front length portion on the run-out roller conveyor next to the cooling bed and subsequently moving the front length portion onto the cooling bed, wherein during moving the front length portion a next preliminary section supplied by the continuous casting plant is introduced into and rolled in the roll stand arrangement.